期刊
AIAA JOURNAL
卷 50, 期 10, 页码 2069-2079出版社
AMER INST AERONAUTICS ASTRONAUTICS
DOI: 10.2514/1.J051253
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资金
- NASA Fundamental Aeronautics Program
Large-eddy simulations of a vortex generator embedded upstream of a normal shock boundary-layer interaction followed by a subsonic diffuser were conducted. In particular, the ramped-vane flow control device was placed in a supersonic boundary layer with a freestream Mach number of 1.3 and a Reynolds number of 2400 based on momentum thickness. The ramped vane had a height of 0.52 delta and generated strong streamwise vorticity that entrained the high-momentum flow to the near-wall region. This contributed to decreasing the shock-induced flow separation while significantly increasing the skin friction coefficient in the diffuser where a strong adverse pressure gradient was present. In addition, it was found that the high-momentum flow persisted far downstream of the shock interaction region, which yielded reductions of both the displacement thickness and the shape factors compared to the uncontrolled case.
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